package com.tju.eduservice.listener;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.tju.eduservice.entity.EduSubject;
import com.tju.eduservice.entity.excel.SubjectData;
import com.tju.eduservice.service.EduSubjectService;
import com.tju.serviceHandler.GuliException;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class SubjectExcelListener extends AnalysisEventListener<SubjectData> {

    private EduSubjectService subjectService;


    @Override
    public void invoke(SubjectData subjectData, AnalysisContext analysisContext) {

        if (subjectData == null){
            throw new GuliException(20001,"文件数据为空");
        }
        EduSubject existOneSubject = this.existOneSubject(subjectService, subjectData.getOneSubjectName());
        if (existOneSubject == null){ //不存在相同的一级目录
            existOneSubject = new EduSubject();
            existOneSubject.setParentId("0");
            existOneSubject.setTitle(subjectData.getOneSubjectName());
            subjectService.save(existOneSubject);
        }
        //获得一级分类的id值
        String pid = existOneSubject.getId();
        //判断二级分类 并且添加
        EduSubject existTwoSubject = this.existTwoSubject(subjectService, subjectData.getTwoSubjectName(), pid);
        if (existTwoSubject == null){ //不存在相同的一级目录
            existTwoSubject = new EduSubject();
            existTwoSubject.setParentId(pid);
            existTwoSubject.setTitle(subjectData.getTwoSubjectName());
            subjectService.save(existTwoSubject);
        }


    }

    //判断一级分类不能重复添加
    private EduSubject existOneSubject(EduSubjectService subjectService,String name){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("parent_id","0");
        wrapper.eq("title",name);
        EduSubject one = subjectService.getOne(wrapper);
        return one;
    }

    //判断二级分类不能重复添加
    private EduSubject existTwoSubject(EduSubjectService subjectService,String name,String pid){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("parent_id",pid);
        wrapper.eq("title",name);
        EduSubject twoSubject = subjectService.getOne(wrapper);
        return twoSubject;
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {

    }
}
